Revelation 2

14 But I have a few things against thee, because thou hast there some that hold the teaching of Balaam, who taught Balak to cast a stumblingblock before the children of Israel, to eat things sacrificed to idols, and to commit fornication. 15 So hast thou also some that hold the teaching of the Nicolaitans in like manner. 16 Repent therefore; or else I come to thee quickly, and I will make war against them with the sword of my mouth.